Planetary transmission drum



nme 24 192,4o

A. A. KNEE ET AL.

PLANETARY TRANSMISSION DRUM Filed May 17. 1925 Patented dune 2d, i924@ atea?? vez . i n SSION' DRUM.

Application filed may 3 7,

`To all/whom it may concern.'

Be it known that we, AARON A. KNEE and WILLIAM E. JORDAN, citizens of the United \States, residing at Charlotte, in the county 5 of Mecklenburg and State of North Carolina, have invented a new and useful Improvement in Planetary Transmission Drums, of which the following is a specification. f

The object of Oui` invention is to provide novel means for Oiling the transmissionband lining of'planetary transmission drums, to prevent theflinin s from becoming glazed and thereafter fai ingto function properly.` We attain the objects of our invention by the device illustrated .in the accompanying drawings, in which-'-` Figure Lis a section through the planetary transmission drums, showing the improvement; and

Fig. 2 is asection on line 2-2 of Figi. Like numeralsdesignate like parts in both of theviews;

Referring to the accompanying drawings, we provide planetary transmission drums 1,

- 2 and 3, arranged in the conventional manner. AllA three of the drumsv are provided with a series of spaced openings or slots 4,"

of appropriate size and shape to ermit oil to pass through onto the transmission lining 5 of the brake band, slow speed band or re: verse band of the respective drums.A We further provide the transmission drums 1,

, 2 and 3 with the novel shallow annular oil 35. grooves or channel 7, said channels extendlng approximately the Width of the drum to kee a small quantit of o il 8 constantly wit in the drums, as s own in the drawings, The transmission band lining 5 is made of 4o such material that it does not absorb oil quickly and when the brakes or low gear are 1923. Serial No. 639,666.

used for a long distance, all of the Oil vis squeezed out of thebrake lining or the transmission lining' and it is only a short while until the drum Or lining gets very hot, causin the lining to burn, glaze and carbonize. n our invention,'the series of Openings 4 permit the oil to pass through from the inside of the drumsto the brake or transmission lining 5 while it is pressed a ainst the drum. This occurs regardless o -how tight or how close the lining is pressed to the drum. Enough oil enters the lining to keep it properly lubricated and to prevent burning, lglazing and carbonizing, greatly reducing t e wear on the drum and on 4the band ,and preventingjerking or grabbing of the brake drum. This in turn adds to the life of the Aentire mechanism 'of the automobile Or other machinery to which the intransmission and to grip the drum gently and evenly, with little heat and friction;

The Oil 8 in the suitable annular channel 7 flows through the perforations 4 Onto the linin s 5, as illustrated in Fig. 2.

-Wlgiat we claim is:

In a device Of the class described, lanetary transmission drums having suita le annula oil channels on the inner surfaces of the drums, said channels extending approximately over the width of the drum to keep a small quantity of oil constantly within the drums, and a series of spaced perforations extending front said Oil channels to the Outer surfaces of the drums, whereby to permit of Oil seeping through and lubricating the transmlssion linings, for the purposes hereinbefore described.

AARON A. KNEE. WILLIAM E. JORDAN. 

